Zelle



(No Model.)

B. J. VAUZELLE. DEVICE FOR FIXING PNEUMATIG TIRES T0 WHEEL RIMS.

No. 519,165. Patented May'l, 1894.

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THE NAYIONIL urucammma GOMPANV.

WASMHGTON. a. a.

NITED TATES ATENT OEFIcE.

EMILE JOSEPH vAUzELnE, OF PARIS, FRANCE.

SPEGIFIOATIQN forming part of Letters Patent No. 519,165, dated May 1, 1894. Application filed September 15 1893. Serial No. 485,585. (No model.) Patented in France'Apzil '7, 1898, No. 215,976.

.To all whom it may concern:

Be it known that I, EMILE JOSEPH VAU- ZELLE, builder, a citizen of the Republic of France, residing in Paris, France, have invented an Improved Device for Fixing Pneu' matic Tires to the Rims of Wheels for Velocipedes and other Vehicles, (for which I have obtained a French patent, dated April 7, 1893, No. 215,976,) of which the following is a specification.

My invention relates to a devicefor fixing pneumatic tires to the rims of wheels for velocipedes and other vehicles, use being made of endless wires inclosed in the thickened edges of the protecting envelope of the air chamber. These endless wires act by tension upon the rim owing to their connection with the air valve upon which a nut is caused to act which bears upon the tubulure of the rim providing for the passage of the said valve. The tightening of the aforesaid nut has the efiect of carryingaway the valve and the wires which are under tension in direct ratio to the movement of the valve into the tubulure and which under this action cause a diminution in the diameter of the envelope or tire. From this results a more powerful circular pressure of the said envelope against the rim, which has the effect of preventing the envelope from leaving its place, by fixing it in a perfect manner upon the rim without any other apparent means than the tubulure of the valve existing in all pneumatic tires.

To render my improved device properly understood I will proceed to describe the same with reference to the accompanying drawings.

Figure 1 of the drawings represents a 1ongitudinal section of a portion of a pneumatic tire, the air chamber and its protecting envelope being mounted upon the rim. Fig. 2 is a transverse section showing the parts constituting the improved device. Fig. 3 represents a modification of the mode of connecting the tension wires with the air valve. Fig. 4 represents a modification of the mode of connecting these wires with the protecting envelope.

In all these figures corresponding parts are designated by similar letters of reference.

In the figures K is the air chamber, L its protecting envelope, H the metallic rim upon which the said envelope is to be fixed, and A the air valve let into the air chamber upon which it is held in any suitable manner. Upon the nut B of the valve are placed disks 0 and D provided .each with an eye designed to receive the tension wires 0 O inclosed in the thickened edges L L of the envelope L. The whole is sunk into a tubulure E brazed upon the metallic rim H and the edge of which serves as a support for a thumb nut F having for its object to pull the valve A' or push it away and consequently put the wires 0 O in or out of tension. Above the nut F a stopper G is screwed upon the valve, this stopper serving at the same time as a counter nut. The tension wires 0 0 pass from the thickened edges L L' of the envelope through the loops at a of the metallic wires 17 b which are also inserted into the said thickened edges and are entirely independent of the tension wires. These loops protect the thickened edges while they ofier almost no resistance whatever to the traction, considering the small surface of the tension wires in contact with the loops. Moreover, the wires 1) b being very flexible adapt themselves with great facility to the form of an arc of a circle necessitated by the contact of the thickened edges with the rim.

In lieu of the wires 2) b with rings or loops a. a 'I may sink into the thickened edges short pieces of tubes 0 (Fig. 3) pierced with holes a c for the passage of the tension wires 0 0, but this is less practical than the means above described.

Instead of passing the tension wires 0 0 through the eyes in the disks 0 and D, I may simply engage them with notches d formed at the'end of a tube (2 (Fig. 4) substituted for the said disks and held by a nut e.' The substitution of this tube for the eyes facilitates the connection of the tension wires to the valve, inasmuch as it is sufficient to cause velope, the said tension wires being passed throughthe said loops at a and attached to r 5 and adapted to be moved by the said air valve, all substantially as and for the purposes set forth.

In testimony whereof I have signed my name to this specification in the presence of 20 two subscribing witnesses.

EMILE. JOSEPH VAUZELLE.

Witnesses: v

PAUL CHARLES ERNEST GARNAUD, LEON FRANOKENS. 

